Improvement in spike-machines



A. M. GEORGE, OF

IMPROVEMENT IN Specification forming part of Letters Pate To @ZZ whom it may concern Be it known that I, A. M. GEORGE, of the city, county, and State of New York, have invented a new and useful Improvement in Machines for Forming Railroad-Spikes; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had to the annexed drawings,mak ing a part of this specification, in which- Figure l is a front view of my improvement. Fig. 2 is a plan or top view of the same. Fig. 3 is a diagram showing the manner in which the varying taper of the points of the bolts is obtained.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists in having the lever to which the cutter for cutting off the blanks is attached work on a pivot or rod which is placed eccentrically on the upper end of a cylinder itted within one of the jaws of the machine, and also placing the roller which gives the cutting movement to the cutter on a pivot or rod, also placed ccentrically on a cylinder, which is fitted within the other jaw of the machine, by which, as will be presently shown, the cutting movement of the cutter may be varied so as to form long or short taper points on the bolts.

To enable those skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents a bed or platform on which two jaws, B B', are placed horizontally. One of these jaws, B, works 011 a pin, a, attached to the bed or platform. rIhe other jaw is stationary or is permanently attached to the bed or platform.

C represents a toggle to the end of the outer arm of which a heading-die, D, is attached, which works aga-inst the inner edges of the two jaws. On the connecting-pin b of the toggle a roller, c, is placed.

D' is a lever one end of which works on a pin, d, attached to the bed or platform A. The inner end of the jaw B and the inner end of the lever D work in grooved cams E on a shaft, F, placed transversely on one end ot` the bed or platform A.

Vithin the movable or vibrating jaw B there is fitted loosely a vertical cylinder, G, on the upper end of which a pivot or rod, e, is attached, said pivot or rod having a friction-roller, f, uponit. The cylinder Gisitted loosely in the jaw B, so that it may be turned PATENT innen.

New YORK, N. Y.

SPIKE-MACHINES.

nt No. 13,945, dated December 18, 1855.

therein when necessary, the cylinder being secured at any desired point by a set-screw, g.

I/Vithin the permanent or stationary jaw B' there is fitted a similar cylinder, II, which also has a pivot or rod, t', placed eccentrically on its upper end, on which pivot or rod a lever, I, is fitted. The cylinder H is secured in the desired position in the jaw B' by aset screw, j.

To the end of the lever I a vertical cutter,

. 7c, is attached.

J is a lever which works upon the upper end of the pin d of the lever D'. The outer end of this lever has a slot, Z, made through it, in which slot a pin, m, on the jaw B' tit-s. The inner end of the lever is actuated by one of the cams E, as will be presently shown.

Operation: rIhe bar A' from which the spikes are formed is placed between the two jaws B B', the end of the bar bearingagainst the die D', which at this time serves as a stop. Motion is then given the shaft F in any proper manner, and the jaw B is moved by its cam E toward the stationary jaw B', the back ends of the jaws grasping the bar. The toggle C is then operated by the lever D' acting against the roller c, and the die D is moved forward and forms the proper head upon the spike, while the lever I is moved outward from the jaws by the roller f, and the cutter 7c cuts the blank off obliquely from the bar A', and the oblique end is properly bent as the jaw B closes or bears fully against the jaw B', so as to -form a proper taper point. The Obliquity of the cut of the cntter 7c is regulated by changing the positions of the pivots or rods e t'. This is done by turning the cylinders G II in the jaws. rIhe points of the spikes therebymay be made more or less taper, as desired. The cutter lc is returned to its original position, or between the jaws B B', by means of the lever J, which is acted upon by the cam E of the jaw B.

I do not claim the jaws B B', nor the toggle C with heading-die D attached, for they have been previously used; but

I claim- The friction-rollers f and lever I, to which the cutter k is attached, when said roller and lever are placed upon adjustable centers or pivots or rods c t, arranged substantially as shown for the purpose specified.

Vitnesses: A. M. GE

Jos. Guo. MASON, WM. TUsoH.

ORGE. 

